Roughing guide device



March 13, 1951 R. J. HlNDLE ETAL ROUGHING GUIDE DEVICE Filed March 21,195o Patented Mar. 13, 1951 ROUGHING GUIDE DEVICE Robert James Hindleand Joseph Domenic Carrier, Toronto, Ontario, Canada Application March21, 1950, Serial No. 150,956

2 Claims.

l This invention relates to a roughing machine and guide device thereforemployed in the roughing of the shoe bottom for the application of thelfinal sole thereto by cementing.

the class having a sole, which is cemented to the undersole, it is usualto project the upper leather over the outer surfaces of the shoe bottomby cementing before the application of the final sole.

A conventional operation involves the roughing of the overlappedportions of the upper in order to remove unacceptable irregularities andalso to provide a refined surface in the leather facilitating atenacious bond for the bonding cement which fastens the iinal sole tothe shoe bottom. In employing a conventional wired buf'ng wheel for sucha roughing operation, it is necessary to train the operator suicientlyfor him to develop high skill since it is comparatively easy for theshoe to be improperly manipulated in the hands of the operator, wherebythe sides of the shoe adjacent the sole are scuffed or otherwisedamaged, requiring loss of the shoe or expensive repair procedure.

It is a particular object of the present invention to provide a guidewheel mountable in conjunction with a roughing wheel against which theoperator may ride the shoe as the shoe is engaged with the roughingwheel.

Another object of the invention is to provide a device as before,wherein the guide wheel is so positioned that it is impossible for theoperator to damage the sides of the shoe if the shoe is kept inengagement with the guide wheel during the roughing operation.

A further object of the invention is to provide A control the speed ofthe roughing operation along the shoe, being of particular importance inthe roughing of shoes having very fine and thin leather uppers.

With this and other objects in View, the invention generally comprises adevice for roughing shoe bottoms in the form of a roughing wheel and aguide wheel positioned adjacent the roughing wheel aligned approximatelytangentially in respect thereto and spaced therefrom in accordance withthe dimensional characteristics of the article to be roughed.

Other objects of the invention will be appreciated by a study of thefollowing specification taken in conjunction with the accompanyingdrawings.

In the drawings, Figure l is a perspective view 2 of a machine showingcomponents thereof incident to the present invention. Figure 2 is adetail-ed View of the .components essential to the invention,illustrating the operation thereof.

Referring to the drawings, a roughing wheel II! is provided, mounted ona suitable shaft II driven by belt drive from a motor (not shown). Theroughing wheel I0 may be of any suitable type but is preferably formedof Va conventional wire brush I2 retained in its form by the side discsI3. As indicated in Figure 1, a guide wheel is provided which may be inthe form of a metal disc I4 having a rubber-like tire I5 thereon, whichdisc is fastened to the mounting shaft I6 in any suitable manner. Asuitable pulley I1 mounts a belt i8 which extends from operativeconnection to the motor (not shown), serves to drive the shaft I6 in thedirection of arrow "y (Figure 1). The shaft IS is suitably mounted in abracket I9 supported by a frame piece 20 in the interior of a housingstructure 2|. The wheel I0 rotates in a clockwise direction and thematerial removed from the shoe bottom 22 passes to the dust collectortube 23 which extends to the dust collector unit of any well-knowndesign.

A coarse roughing wheel 24 is preferably provided in the lower shaftportion of the housing 2l for the removal of very coarse irregularitieson the sole bottom 22 before the roughing 0peration. The Wheel 24 isdriven in any suitable manner from the motor (not shown) in the housing2|.

In operation, the shoe 25 is positioned such that the shoe bottom 26thereof has its edge 2l positioned against the guide wheel i4 wherebythe Wheel I0 is positioned to remove small irregularities from thesurface 28 and to rene the latter. It will be observed that the shoebottom 26 illustrated in Figure 2, may be moved about considerablyduring the roughing operation so long as some portion of the edge 21thereof is kept in engagement with the guide wheel i4. Sc long as theoperator keeps positive pressure in the direction of the guide wheel I4,there is no danger of the roughing wheel riding over the edge of theshoe bottom and damaging the surfaces 2l thereof. Preferably the guidewheel is driven at a rate of rotation which is about one-sixth of therate of rotation of the roughing wheel. Satisfactory operation has beeneX- perienced with the roughing wheel rotating at 3,000 R. P. M. and theguide wheel at about 50()` R. P. M.

Although in the preferred construction, it is desired that the guidewheel I4 be driven, it is nevertheless contemplated that it merely befree to rotate and this construction involves the invention in itsbroader aspect. It will, however, be apparent that many modications canbe made in the specific manner of mounting the roughing wheel and theguide Wheel Without departing from the spirit of this invention.Accordingly, it is desired that this disclosure should not be construedin any limiting sense other than that indicated by the scope of thefollowing claims.

What we claim as our invention is:

1. In a roughing machine for roughing shoe bottoms, the combination of,a roughing Wheel having roughing means thereon, a guide Wheel, meansmounting said guide Wheel to align its plane of rotation substantiallytangential to the circumferential line of the roughing means on theroughing Wheel, and means for rotating said roughing wheel in adirection tending to urge the shoe bottom away from the guide Wheel whenthe edge of the shoe bottom is engaged against the circumference of theguide wheel by an operator.

2. In a roughing machine for roughing shoe bottoms, the combination of,a roughing Wheel having roughing means thereon, a guide Wheel, meansmounting said guide wheel to align its plane of rotation substantiallytangential to the circumferential line of the roughing means on theroughing Wheel, means for rotating said roughing wheel in a directiontending to urge the shoe bottom away from the guide Wheel when the edgeof the shoe bottom is engaged against the circumference of the guideWheel by an operator, and means for driving said guide Wheel in adirection tending to move the shoe bottom into engagement with theroughing means of said roughing wheel but rotating the same at arelatively slow speed as compared to the speed of rotation of saidroughing wheel.

ROBERT JAMES HINDLE.

JOSEPH DOMENIC CARRIER.

REFERENCES CITED The following references are of record in the iile ofthis patent:

UNITED STATES PATENTS Number Name Date 2,179,351 Ricks et al. Nov. 7,1939 2,470,866 Sabin May 24, 1949 FOREIGN PATENTS Number Country Date416,667 Great Britain Sept. 18, 1934 463,251 Great Britain Mar. 24, 1937

